Add full ASLv2 copyright notice to commit-msg hook

Users will be receiving a copy of this script directly onto their
systems, so they should really have the copyright notice associated
with the code and where they can find the complete license text.

Change-Id: I34ca34fbd5560ffd1a92fc1fe8b43ab49175fb19
Signed-off-by: Shawn O. Pearce <sop@google.com>
1 file changed